ajax请求

var xmlhttp;

var data;

//Mozilla ,chmore浏览器(将XMLHttpRequest对象作为本地浏览器对象来创建)

if(window.XMLHttpRequest){ //Mozilla 浏览器

xmlhttp = new XMLHttpRequest();

}else if(window.ActiveXObject) { //IE浏览器

//IE浏览器(将XMLHttpRequest对象作为ActiveX对象来创建)

try{

xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");

}catch(e){

try {

xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");

}catch(e){}

}

}

var Url = "http://ip.taobao.com/service/getIpInfo.php?ip=220.181.134.224";

xmlhttp.open("GET", Url, true);

xmlhttp.onreadystatechange = result;

xmlhttp.send(data);

function result(){

if (xmlhttp.readyState == 4) {

var response = xmlhttp.responseText;

alert(response);

}

}

ajax 请求